3a thread class right-hand 0.880" thread length hexagon head style 0.062" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class left-hand 0.750" thread length flat chamfer head style 20 thread quantity per inch 0.062 in. by 45 deg chamfer on thd end unf thread series
2a thread class right-hand 0.719" thread length flat chamfer head style 20 thread quantity per inch 0.062 in. by 45 degree chamfer on thd end unf thread series
3a thread class right-hand 1.590" thread length hexagon head style 0.064" hole diameter 13 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.620" thread length hexagon head style 0.070" hole diameter 18 thread quantity per inch cadmium surface treated unc thread series